Core FSN

Core FSN EDUCATE, MOTIVATE, DOMINATE
Promote a winning environment that provides athletes the opportunity to grow physically, mentally, and emotionally.

Through each athletes commitment to hard work, success is the ultimate reward. Core FSN provides adult group training and youth speed, agility and strength training to the Saint Charles, IL, area. Keeping Physical and Mental Wellness a Priority in Your Daily Life
At Core FSN, adults work one-on-one with a trainer and coach or in a group setting. Teen, middle-school and youth athletes have a dedica

ted space and a team of coaches to help foster their progress. Our classes focus on optimizing strength and improving overall fitness. We also have a dedicated “workout of the day,” and a range of daily classes and sessions. We created CoreFSN to “fit “in with your daily lifestyle, goals, and availability. A healthy way of eating supports a healthy way of living. Core Nutrition is a place to refuel and rebuild post-workout and your destination when you’re looking for a “meal on the go” that won’t be detrimental to your healthy lifestyle.

06/05/2026

I just need a minute 😩
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

Congrats Nancy! 💪🏼🤗💕⬇️PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTSNewbie special is back! Adults: Try Small Group...
06/01/2026

Congrats Nancy! 💪🏼🤗💕
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

What if you SHINE ✨🥹⬇️PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTSNewbie special is back! Adults: Try Small Group...
05/28/2026

What if you SHINE ✨🥹
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

05/27/2026

Summer Class Schedule beginning June 1st ⬇️PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTSNewbie special is back! Ad...
05/26/2026

Summer Class Schedule beginning June 1st
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

Summer Schedule beginning June 1st⬇️PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTSNewbie special is back! Adults: T...
05/26/2026

Summer Schedule beginning June 1st
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
ADULTS:
Monday through Thursday:
5am, 6am, 7am, 8am, 9am, 5pm
Friday:
5am, 6am, 7am, 8am, 9am
Saturday:
7am

KIDS:
Monday, Wednesday, Friday:
11am - 1pm
Tuesday, Thursday:
4:30pm - 6:30pm
Saturday:
9am - 11am
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

Murph Challenge 2026 💪🏼👊🏼 Thank you all who donated and participated, we had so much fun.
05/26/2026

Murph Challenge 2026 💪🏼👊🏼 Thank you all who donated and participated, we had so much fun.

05/22/2026

I promise we don’t 🤣
⬇️

PERSONAL TRAINING AT A SMALL GROUP LEVEL FOR ADULTS

Newbie special is back!
Adults: Try Small Group Personal Training FREE for
1 Week in bio

📆CLASS SCHEDULE
Monday through Thursday
5am, 6am, 7am, 8am, 9am, 5pm, 6pm
Friday
5am, 6am, 7am, 8am, 9am
Saturday
7am, 8am
Sunday
Closed
-
💪🏼Treat yourself or someone special to a FREE WEEK
📞Call/DM us on instagram: (847) 393-3316

📍731 N 17th Street, Unit 10
Saint Charles, IL

🧋Visit for more on balanced meals & elevated energy

Go Greg!!!!!! 💕💪🏼🎉
05/22/2026

Go Greg!!!!!! 💕💪🏼🎉

05/20/2026

Explicit

Address

731 N 17th Street , Unit 10
Saint Charles, IL
60174

Opening Hours

Monday 5am - 8:30pm
Tuesday 5am - 8:30pm
Wednesday 5am - 8:30pm
Thursday 5am - 8:30pm
Friday 5am - 8:30pm
Saturday 6am - 2pm

Telephone

+16304036495

Website

Alerts

Be the first to know and let us send you an email when Core FSN posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share

Category